Joint gap cleaning brush



FIG. 1 is a front elevation view of a joint gap cleaning brush, showing my new design,

FIG. 2 is a rear elevation view thereof,

FIG. 3 is a side elevation view thereof,

FIG. 4 is an opposite side elevation view thereof,

FIG. 5 is a top plan view thereof,

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof. 

CLAIM The ornamental design for a joint gap cleaning brush, as shown and described. 